Syringe



\ 2 Sheets-Sheet 1.

G. BAY.

(No Model.)

SYRINGB.

lvm-498,760.

Patented June 6, 1893.

j ma/" zJv/d;

THE foams Hens co, wor

(No Model.) 2 sheets-'sheet 2.

` G. BAY. SYRINGE.

No. 498,760. Patented June 6, 1893.

' UNITED STATES PATENT OFFICE.

GABRIEL BAY, OF PORT MARLY, FRANCE.

SYRINGE.

SPECIFICATION forming part of Letters Patent No. 498,760, dated June 6, 1893.

' Application filed January 12, 1893. Serial No. 458,119. (No model.) Patented in France June '7, 1892, No. 222.174.

To all whom it may concern.-

Be it known that I, GABRIEL BAY, a citizen of the Kingdom of Denmark, residing at Port Marly, in the Department of Seine-et-Oise, France, have invented certain new and useful Improvements in Syringes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has been patented in France by Letters Patent No. 222,174, dated J une 7, 1892.

This invention relates to devices for applying injections generally and especially hypodermic injections; and has for its object to avoid certain defects of the ordinary pistonsyringes, the most serious of these being the difficulty in drying the leather, elder-pith or other substance used therein and not easily rendered antiseptic; which often unfits these devices for use. The irregularity in caliber of the glasses employed is also a defect of such articles.

I have embodied my invention in a very simple combination, which is always in working order without special preparation, and

' which consists essentially in aboX-like receptacle preferably circular in outline, closed on one side by a flexible diaphragm and on the other by a rigid base or plate usually of glass. This receptacle holds the liquid that is to be injected, and the injection is accomplished by pressure on the diaphragm. The implement is furthermore adapted to determine rigorously the quantity of liquid to be injected, either by a special arrangement and construction of its operating parts, or simply by graduating a transparent portion of it, this being the bottom plate as shown.

In the accompanying drawings, Figures 1 and 2 represent plan views of an implement embodying my invention, but without the hypoderniic needle, these views being of the top and bottom respectively. Fig. 3 represents a perspective view of the said implement, with the needle in place. Fig. 4 represents a longitudinal vertical section of the same the operating button stem cam and supporting rod being shown in elevation. Fig. 5 represents a view similar to Fig. 2 of a modification. Fig. 6 represents a side elevation of the same.

Fig. 7 represents a longitudinal central vertical section of the same; and Fig. 8 represents a view of the same, similar to Fig. 1.

A designates a receptacle consisting of a peripheral frame a, preferably annular in form, a flexible elastic diaphragm b, preferably of caoutchouc, whichis stretched over the top of the said frame, and a plate e of glass or other suitable rigid material, which closes the bottom of the said receptacle. A tubular lateral extension f of this receptacle serves as inlet and outlet, its central channel or bore g communicating with the'interior thereof. The tapering outer end of this extension may receive the tubular hypodermic needle 0 shown in Fig. 3, or any other suitable attachment, according tothe especial use intended. A part of this extension or inlet and outlet tube f as shown in Figs. l, 2, 3 and 4 is screw threaded at f to receive a nut 0c, and also provided with a shoulder f2. The said nut clamps against the said shoulder a ring h', which is formed on the outer end of an arm or bar h', extending in a line parallel to said part f and to apoint over the center of the said receptacle, where its end is provided with a hub h2. The said bar is removable by unscrewing first the said nut and then the ring h. In this hub turns the stem t', also capable of endwise motion through the said hub, of the operating pushbutton m. This stem has a raised cam-flange Zr; attached to its lower end and arranged to turn between the said bar h and a disk c, the latter being fastened to the said diaphragm, and having indicating marks or graduations on its upper face. The small end of the said flange is provided with a pointer l, Figs. 1, 3 and 4, which travels over the said indicating marks or graduations.

The receptacle A holds the fluid to be injected, and the maximum amount which it can hold at any one time is determined by the extent to which the flange 7c is turned under the bar h and in contact therewith, depressing more or less the said diaphragm. The degree of this turning is shown by the said pointer on the said disk.

The diaphragm b is fastened at its periphery to the frame ain any convenientmanner, but preferably by allowing it to spring over a circular external bead 0l. of the upper part of the said frame, as indicated in Fig. 4. The

toc

fastening of the disk c to the said diaphragm may be by means of a rivet d, extending up into the lower end of stem t' and serving to steady the same, but permitting the said stem to be turned freely. The blade e aforesaid rests as shown on an inner annular shoulder a2 of the said frame a, although this is not necessary. It is cemented water tight at the edge. The implement may be dipped into, or laid in boiling water, for antiseptic purposes, without injury. In the modification shown in Figs. 5, 6,7and 8 the said flange, pointer, arm and nut are dispensed with, and a screw fn with a broad flat head extends up through the said diaphragm and disk, taking the place of the stem t'. An internally threaded push-button m is turned on the upper and of the said screw. No rotary movement is given to the latter. The metallic disk c has in this form only a protective value; and need not be graduated. But the glass plate e has a series of graduations c marked diametrically on it. When the extension f is held upward the level of the contained liquid as seen through the glass plate e, will show on such graduations the Volume thereof. This modified form of the irnplemeut is simpler than the one first described; but does not absolutely prohibit more than a certain dose. Moreover the actual quantity contained and given willdepend on the care of the operator and his accuracy of sight.

The operation, with the implement shown in Figs. 1, 2, 3 and 4 is as follows: The button m is turned until the pointer Z indicates on the disk c the capacity desired. The extension f is then inserted into the liquid which is to be used as an injection, and the button m is depressed and then allowed to rise to form a vacuum in the well known Way drawing the said liquid into the said receptacle and filling it. The needle o, or any other necessary injecting attachment is then put in place (or this may be done before) and the injection is accomplished by depressing the button 'm again.

The operation with the implement shown in Figs. 5, 6, 7 and 8 is as follows: The push button m is pressed sufficiently to partly fill the receptacle A with the liquid, the amount being guessed as nearly as possible. The implement is then held up, as before stated, to read the volume thus contained by the level seen through the glass. If this is not as desired, more is drawn in, or a part of the liquid is poured out, and another reading is taken; and so on until a reading gives the volume desired. The injection is then eifected as before.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows:

1. In a syringe, the body of its liquid receptacle, in combination with an elastic diaphragm, a rotary push button provided with means for depressing the said diaphragm both by direct push and by rotatiouand with a pointer for indicating capacity substantially as set forth.

2. In a syringe, the body of its liquid receptacle, in combination with an elastic diaphragm covering the same, a push-button bearing against the said diaphragm, a camflange and pointer carried by the stem of the said push-button, and a fixed part of the syringe under and against which the said fiange turns, in order that rotation of the said button may depress the said diaphragm to regulate the contents of the said receptacle substantially as set forth.

In testimony whereof I aiiix my signature in presence of two witnesses.

GABRIEL RAY.

Witnesses:

RoBT. M. HoornR, G. G. LoN'rz. 

